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PIRA Code(s)
Set up time
5 minutes
Physics and Science Concepts
Mechanics, Work and Energy
Hook the bowling ball onto the chain. Pull the bowling ball back until it reaches your nose. Release the ball and do not move. Let the ball come back and show how it will not reach your nose again. *For use in lecture room 131.
Do not give the ball an initial velocity or move forward once the ball is release. Warning: it’s hard not to flinch.

A bowling ball is suspended from the ceiling by a chain. If a stationary person holds the ball against his nose, and releases the ball without giving it an initial velocity, the ball should not strike the person on its return swing.